Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 133, Issue 1, Pages 553-558Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2012.01.084
Keywords
Nanostructures; Inorganic compounds; Ultrasonic techniques; Crystal structure
Categories
Funding
- Korea Research Foundation [2009-0076625]
- National Research Foundation of Korea [2009-0076625] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
Mesoporous TiO2 powders were prepared in 1 min from an aqueous mixture of chelated complex titanium precursor and tri-block copolymer by using a process combining evaporation induced self-assembly (EISA) and spray pyrolysis. Photocatalytic activity was evaluated by measuring the rate of hydrogen evolution from methanol solution. The prepared powders were mainly anatase phase and had worm-like pores. Crystallite size was in the range from 7.8 to 18.6 nm in diameter. The mesoporous TiO2 powders calcined at 823 K had surface area of 144 m(2) g(-1) and high pore volume of 0.33 cm(3) g(-1). Pore size distribution was also narrow. In addition, it had high light absorption intensity below 350 nm. The rate of hydrogen evolution was by a factor of six higher than the rate measured with commercial nano-sized TiO2 powder (Degussa P-25). Unique structural and optical properties, which were mainly originated from our new combined process of EISA and spray pyrolysis, contributed to the enhanced rate of hydrogen evolution. (C) 2012 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available